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EC number: 205-230-7 | CAS number: 136-09-4
Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 06 Jan - 13 Jan 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Version / remarks:
- adopted in 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Version / remarks:
- adopted in 2008
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- flask method
- Specific details on test material used for the study:
- Storage conditions: ambient temperature (10 to 30 °C)
- Water solubility:
- ca. 77 g/L
- Conc. based on:
- test mat. (dissolved fraction)
- Temp.:
- 20 °C
- Remarks on result:
- other: pH at 23 - 24 °C was 2.2
Reference
Results
Table 1 – Preliminary Test Results
Amount of test item [mg] |
Added volume of distilled water [mL] |
Total volume [mL] |
Appearance of mixture |
108.4 |
0.1 |
0.1 |
Not dissolved |
0.4 |
0.5 |
||
0.5 |
1.0 |
||
1.0 |
2 |
dissolved |
From the preliminary tests, the water solubility is > 10 mg/L. In the main test, water solubility was determined with the flask method.
After the equilibration time, precipitate was seen in the flaks with the exception of the blank experiment. Water solubility was calculated from measured unrounded concentration values and not from rounded values.
Table 3 – Test item water solubility
Experiment |
24 h experiment |
48 h experiment |
72 h experiment |
Blank experiment |
Amount of test item [g] |
5.75 |
5.94 |
5.81 |
-- |
Amount of distilled water [mL] |
10 |
|||
Stirring time at 30 °C [h] |
24 |
48 |
72 |
72 |
pH at 23 – 24 °C |
2.2 |
5.4 |
||
Dilution factor |
800 |
|||
Measured concentration [mg/L] |
97.81 |
95.74 |
95.07 |
-- |
Mean concentration [mg/L] |
97.79 |
95.75 |
95.03 |
-- |
Water solubility [g/L] |
78.2 |
76.6 |
76.0 |
-- |
The mean water solubility of the test item at 20 °C was determined to be: cs= 77 g/L (±1 g/L).
Description of key information
77 g/L (± 1 g/L) at 20 °C (OECD 105, Flask method)
Key value for chemical safety assessment
- Water solubility:
- 77 g/L
- at the temperature of:
- 20 °C
Additional information
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